et.al, S. “Fabrication and Characterization of Nano Structured Honeycomb Absorbers and Thermal Analyses on Solar Air Heating Collector”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 6, Apr. 2021, pp. 383-91, https://turcomat.org/index.php/turkbilmat/article/view/1403.